Or, "How to keep your My Little Ponies from being swallowed by the entity that is now the mess in your room."
I originally got my first My Little Pony as a novelty, but five blind bags, three trips to McDonalds and a lucky raffle win later I was starting to lose track of my "herd". I needed a way to display them out of the way of my daily life, but the only shelves I had would often become victim to the tide of stuff that will often flood my room, something I wouldn't be tempted to pile anything on. I saw leftover foam core board from a previous project and figured, "why not?"
Step 1: Step one: have an idea in mind, then get cutting!
I knew what I needed for the shelf: it had to be big enough for my modest but slowly growing collection, simple enough to be repeated for if and when said collection outgrows the first shelf, and adaptable enough so that I could figure out how to add a hook for another upcoming instructable, a bar for the Micky D's ponies, and a place for the cards that come with the blind bag ponies. Unfortunately that's about as far as I go planning-wise for projects like this- spontaneous artist type, watcha gonna do?- so I started cutting and kind of ran with it and a hot-glue gun.